I tested a few links. Some links bring up a file that you can save or open. Other links go to somewhere on myexpospace.com and then time out. However, I went to the myexpospace home page and saw this: "We are currently in a closed beta version of our site. Please give us your email address and we will send you an invitation as soon as the site is ready for users." So, if the material of interest is on myexpospace and if you really want it, I suggest you give them your email address and wait to be notified that their site is ready for use (or don't give them your email address and keep checking on your own).